Infrastructure issues affect your website's foundational performance, availability, and reliability. These issues often have the most significant impact on user experience and can affect all other metrics.
Issue Guides
DNS & Domain
- DNS Configuration - DNS record configuration and propagation issues
- SSL Certificate Issues - Certificate expiry, misconfiguration, and chain issues
- Domain Expiry - Domain registration expiration monitoring
Hosting & Server
- Server Response Time - Slow server response and TTFB issues
- Server Errors - 5xx errors and server availability
- Resource Limits - CPU, memory, and bandwidth constraints
CDN & Caching
- CDN Configuration - CDN setup and caching policy issues
- Edge Caching - Edge server caching effectiveness
- Cache Invalidation - Stale content and cache clearing issues
Uptime & Monitoring
- Downtime Detection - Website availability monitoring
- Geographic Availability - Regional access and latency issues
Why Infrastructure Matters
Infrastructure issues cascade through all other performance metrics:
- Server Response directly affects Time to First Byte (TTFB)
- CDN Configuration impacts global user experience
- SSL Issues can completely block site access
- DNS Problems can make your site unreachable
Quick Diagnosis
Check Server Status
- Verify server is responding (HTTP 200)
- Check for 5xx server errors
- Monitor response times
Verify SSL/TLS
- Certificate validity and expiry
- Certificate chain completeness
- Mixed content warnings
Test DNS
- DNS propagation status
- Record configuration
- Name server availability
Related Categories
- Performance Issues - Core Web Vitals and loading speed
- Security Issues - Security headers and HTTPS